Caribbean

$139+ Cheap flights from Ontario (ONT) to Caribbean

ONT — SJU
Dec 11 — Dec 181
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Caribbean with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Caribbean

Cheapest flights from Ontario to Caribbean

Sat 12/511:00 am -
2 stops22h 58m
Fri 12/112:24 pm -
2 stops21h 20m
Deal found 11/5$328
Mon 11/302:01 pm -
2 stops31h 57m
Tue 12/155:01 am -
2 stops21h 16m
Deal found 11/10$343
Wed 12/98:44 am -
2 stops21h 53m
Sun 12/203:10 pm -
2 stops19h 57m
Deal found 11/5$414
Mon 12/148:44 am -
2 stops21h 53m
Tue 12/227:28 am -
2 stops27h 39m
Deal found 11/7$420
Mon 12/712:36 pm -
2 stops18h 01m
Tue 12/155:01 am -
2 stops21h 16m
Deal found 11/9$423
Wed 11/2511:40 am -
2 stops18h 53m
Wed 12/95:01 am -
2 stops21h 16m
Deal found 11/5$428
Thu 12/311:30 am -
2 stops21h 54m
Tue 12/84:04 pm -
2 stops19h 40m
Deal found 11/5$431
Tue 12/12:00 pm -
2 stops16h 40m
Tue 12/85:01 am -
2 stops21h 16m
Deal found 11/7$432
Tue 12/111:30 am -
2 stops19h 10m
Tue 12/155:01 am -
2 stops21h 16m
Deal found 11/10$438
Tue 12/811:00 am -
2 stops19h 37m
Tue 12/154:04 pm -
2 stops19h 40m
Deal found 11/8$440
Sat 11/286:00 am -
1 stop8h 09m
Fri 12/111:24 pm -
1 stop12h 29m
Deal found 11/6$503
Thu 12/32:00 pm -
2 stops44h 17m
Sun 12/62:22 pm -
2 stops36h 01m
Deal found 11/10$587

Find flight deals from Ontario to Caribbean

Round-trip from

$314
(Mytrip)

One-way from

$139
(Mytrip)

Popular in

June

Cheapest in

September

Average price

$499
From Ontario to Caribbean
One-way flight from Ontario to Caribbean
Highest demand for flights based on searches. 9% potential increase in price ($51 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Ontario to Caribbean that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSan Juan

ONT Ontario - SJU San Juan Luis Munoz Marin Intl

ONTSJU

Ontario

Sat 12/12

11:30 am-1:58 pm

2 stops22h 28m

San Juan Luis Munoz Marin Intl

Wed 12/31

12:00 am-8:00 pm

Nonstop0h 00m

$261

OntarioSan Juan

ONT Ontario - SJU San Juan Luis Munoz Marin Intl

ONTSJU

Ontario

Tue 1/5

6:09 am-1:39 am

2 stops15h 30m

San Juan Luis Munoz Marin Intl

Wed 12/31

12:00 am-8:00 pm

Nonstop0h 00m

$273

OntarioPunta Cana

ONT Ontario - PUJ Punta Cana

ONTPUJ

Ontario

Fri 1/8

8:50 am-1:24 pm

2 stops24h 34m

Punta Cana

Wed 12/31

12:00 am-8:30 pm

Nonstop0h 00m

$284

OntarioSan Juan

ONT Ontario - SJU San Juan Luis Munoz Marin Intl

ONTSJU

Ontario

Thu 1/14

5:05 am-1:16 am

2 stops16h 11m

San Juan Luis Munoz Marin Intl

Wed 12/31

12:00 am-8:00 pm

Nonstop0h 00m

$287

OntarioMontego Bay

ONT Ontario - MBJ Montego Bay Sangster Intl

ONTMBJ

Ontario

Thu 1/21

1:42 pm-12:13 pm

2 stops19h 31m

Montego Bay Sangster Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$297

OntarioMontego Bay

ONT Ontario - MBJ Montego Bay Sangster Intl

ONTMBJ

Ontario

Thu 12/31

1:38 pm-1:48 pm

2 stops21h 10m

Montego Bay Sangster Intl

Wed 12/31

12:00 am-9:00 pm

Nonstop0h 00m

$297

OntarioSan Juan

ONT Ontario - SJU San Juan Luis Munoz Marin Intl

ONTSJU

Ontario

Tue 12/8

5:00 am-6:25 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Wed 12/31

12:00 am-8:00 pm

Nonstop0h 00m

$302

OntarioSan Juan

ONT Ontario - SJU San Juan Luis Munoz Marin Intl

ONTSJU

Ontario

Wed 1/20

6:00 am-9:24 pm

1 stop11h 24m

San Juan Luis Munoz Marin Intl

Wed 12/31

12:00 am-8:00 pm

Nonstop0h 00m

$302

OntarioSan Juan

ONT Ontario - SJU San Juan Luis Munoz Marin Intl

ONTSJU

Ontario

Fri 4/23

5:00 am-5:38 pm

1 stop9h 38m

San Juan Luis Munoz Marin Intl

Wed 12/31

12:00 am-8:00 pm

Nonstop0h 00m

$302

OntarioSaint Thomas Island

ONT Ontario - STT Saint Thomas Island Cyril E King

ONTSTT

Ontario

Wed 12/2

2:22 pm-12:17 pm

2 stops17h 55m

Saint Thomas Island Cyril E King

Wed 12/31

12:00 am-8:00 pm

Nonstop0h 00m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/7

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Ontario to Caribbean

Have a flexible travel schedule? Discover the best time to fly to Caribbean from Ontario with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Ontario to Caribbean

What is the cheapest month to book a flight from Ontario to Caribbean?

Currently, October is the cheapest month in which you can book a flight from Ontario to Caribbean (average of $479). Flying from Ontario to Caribbean in November is currently the most expensive (average of $788). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How far ahead should I book a flight from Ontario to Caribbean?

Booking 57 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Caribbean. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Caribbean

Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Ontario to Caribbean. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Food

7.0

Crew

8.6

Boarding

8.1

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Related info for your journey

  • What airport do you fly from for flights from Ontario to Caribbean?

    If you book a flight to Caribbean from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ontario to Caribbean?

    Departing from Ontario to Caribbean will take you 9h 23m. Ontario and Caribbean are separated by a distance of 2473 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Ontario to Caribbean one-way?

    The cheapest airlines for a one-way flight from Ontario to Caribbean are United Airlines ($142), American Airlines ($186), and Southwest ($207).

  • What are the most popular routes from Ontario to Caribbean?

  • Can I find deals for flights from Ontario to Caribbean that include hotel bookings?

    Yes. In addition to deals on Ontario to Caribbean flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Caribbean?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Caribbean.

  • Can I find deals for business class flights from Ontario to Caribbean?

    Yes. Cheapflights offers flight deals from Ontario to Caribbean by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Caribbean?

    Currently, October is the cheapest month in which you can book a flight from Ontario to Caribbean (average of $479). Flying from Ontario to Caribbean in November is currently the most expensive (average of $788). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Ontario to Caribbean

Top 5 airlines flying from Ontario to Caribbean

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$168Average$552FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$293Average$642FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$382Average$673FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$419Average$659FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$421Average$742FlexibilityNo cancel feeOn-time62%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.